Patent · US Expired

Fault-current protective switchgear

US6307725A · kind A · utility

2Cited by

3References

2Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Reinhard Solleder · Lappersdorf, DE
Reinhard Schmid · Regensburg, DE
Manfred Kleemeier · Neutraubling, DE
Fritz Pohl · Hemhofen, DE

Key dates

Filing date	Feb 14, 2000
Grant date	Oct 23, 2001
Priority date	—
Expiry date	Feb 14, 2020

Classification

Technology area (CPC H)Electricity
CPC primaryH02H3/335
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A residual current device includes a residual current tripping circuit for actuating a release, and an additional monitoring device for checking the release, in which case a device is provided for electrically decoupling the residual current tripping circuit from the monitoring device.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.